EP1586791A1 - Method of manufacturing torsional damper - Google Patents
Method of manufacturing torsional damper Download PDFInfo
- Publication number
- EP1586791A1 EP1586791A1 EP03756659A EP03756659A EP1586791A1 EP 1586791 A1 EP1586791 A1 EP 1586791A1 EP 03756659 A EP03756659 A EP 03756659A EP 03756659 A EP03756659 A EP 03756659A EP 1586791 A1 EP1586791 A1 EP 1586791A1
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- EP
- European Patent Office
- Prior art keywords
- annular
- hub
- rubber
- annular rubber
- coupling agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/124—Elastomeric springs
- F16F15/126—Elastomeric springs consisting of at least one annular element surrounding the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2226/00—Manufacturing; Treatments
- F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
- F16F2226/045—Press-fitting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
- Y10T29/4987—Elastic joining of parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49863—Assembling or joining with prestressing of part
- Y10T29/4987—Elastic joining of parts
- Y10T29/49872—Confining elastic part in socket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49885—Assembling or joining with coating before or during assembling
Definitions
- a torsional damper for absorbing a torsional vibration (a vibration in a rotational direction) generated in a crank shaft of an internal combustion engine of a vehicle in accordance with a rotation is provided with a structure in which a metal annular mass is coaxially and elastically connected to an outer periphery of a metal hub fixed to a crank shaft via an annular rubber, and lowers the torsional vibration in a specific rotating speed range on the basis of a dynamic vibration absorbing effect caused by a resonance in a torsional direction.
- the fitting type torsional damper is structured such that the hub, the annular rubber and the annular mass are connected to each other only on the basis of a frictional resistance caused by a compression reaction force of the rubber at a time of being pressure inserted, there is a risk that a slip in a circumferential direction is generated between the fitting surfaces of the hub or the annular mass and the annular rubber at a time when an input torque is increased. Accordingly, in order to prevent the slip mentioned above from being generated, it is necessary to improve a sliding torque between the hub, the annular rubber and the annular mass.
- Japanese Patent Unexamined Patent Publication No. 2001-27287 describes a structure in which a silane coupling agent is applied to the opposing peripheral surfaces between the hub and the annular mass or the annular rubber at a time of pressure inserting the annular rubber to the portion between the opposing peripheral surfaces of the hub and the annular mass arranged in the outer peripheral side of the hub.
- the silane coupling agent interposed in the fitting surface between the hub and the annular mass or the annular rubber achieves a significant effect for increasing the sliding torque.
- the present invention is made by taking the problem mentioned above into consideration, and a technical object of the present invention is to increase a sliding torque between a hub, an annular rubber and an annular mass without increasing a pressure inserting load at a time of pressure inserting the annular rubber to a portion between opposing peripheral surfaces of the hub and the annular mass.
- a manufacturing method of a torsional damper comprising the steps of:
- a load at a time of pressure inserting the annular rubber is lowered in comparison with a case of pressure inserting the annular rubber without applying the lubricating fluid after applying the silane coupling agent to the fitting surface, and the load can be further lowered in comparison with a case of pressure inserting the annular rubber by applying the lubricating fluid without applying the silane coupling agent to the fitting surface.
- the coupling agents which can be employed are, for example, an amine group silane coupling agent (a silane coupling agent containing an amino group) described in the patent document 1 previously referred, an urethane group silane coupling agent (a silane coupling agent containing an isocyanate group), the other silane coupling agents, an amino denatured sililated polymer corresponding to derivatives obtained by denaturing them, a sililated amino polymer, an unsaturated amino silane complex, a block isocyanate silane, a phenyl amino long-chain alkyl silane, an amino sililated silicone, a sililated polyester and the like.
- an amine group silane coupling agent a silane coupling agent containing an amino group described in the patent document 1 previously referred
- an urethane group silane coupling agent a silane coupling agent containing an isocyanate group
- the other silane coupling agents an amino denatured sililated polymer corresponding to derivatives obtained by
- Fig. 1 is a half sectional view showing a manufacturing method of a torsional damper in accordance with the present invention by cutting along a plane passing through an axis of a hub
- Fig. 2 is a schematic view showing a half section obtained by cutting the manufactured torsional damper along the plane passing through the axis thereof and a method of measuring an accuracy of oscillation in an axial direction of an annular mass thereof.
- Fig. 1 is a half sectional view showing a manufacturing method of a torsional damper in accordance with the present invention by cutting along a plane passing through an axis of a hub
- Fig. 2 is a schematic view showing a half section obtained by cutting the manufactured torsional damper along the plane passing through the axis thereof and a method of measuring an accuracy of oscillation in an axial direction of an annular mass thereof.
- reference numeral 1 denotes a hub mounted to an axial end of a crank shaft of an internal combustion engine (not shown)
- reference numeral 2 denotes an annular mass concentrically arranged in an outer peripheral side of the hub 1 apart from the hub
- reference numeral 3 denotes an annular rubber pressure inserted and fitted to a portion between opposing peripheral surfaces of the hub 1 and the annular mass 2 from one side in an axial direction.
- An outer peripheral surface 1a of the hub 1 (the rim portion 13) and an inner peripheral surface 2a of the annular mass 2 opposing thereto in a diametrical direction are formed in a gently undulated shape in a diametrical direction in correspondence to each other in the illustrated section. Further, a coupling agent is applied to the opposing peripheral surfaces 1a and 2a without previously processing a face to be rough in accordance with a chemical surface treatment such as a bonderizing treatment or the like, and the opposing peripheral surfaces 1a and 2a are dried.
- the lubricating fluid it is possible to employ the aromatic hydrocarbon compound, the plasticizing agent, the softening agent and the like which are described previously. Since these materials tend to be absorbed in the rubber material, and have proper volatility, they tend to be removed from the fitting surface on the basis of the absorption and the volatility, can be easily removed by cleaning, have good compatibility with the silane coupling agent, and do not cause any damage to the rubber material . Accordingly, these materials are preferable. Further, since the silane coupling agent dries quickly, it is possible to apply the lubricating fluid to the surface where silane coupling agent has been applied, after drying.
- the torsional damper is widely improved in durability of the annular rubber 3 and an accuracy of oscillation in an axial direction of the annular mass 2 at a time of rotating.
- Table 1 shows results obtained by measuring a pressure inserting load at a time of pressure inserting the annular rubber 3, and an accuracy of oscillation in the axial direction of the annular mass 2 of the torsional damper after being manufactured, in order to verifying an effect obtained by the manufacturing method in accordance with the present invention.
- the torsion damper provided for the measurement is formed in a cross sectional shape shown in Fig. 1, and the accuracy of oscillation in the axial direction is obtained by rotating the torsional damper around an axis O and measuring an amount of displacement in the axial direction of one end surface of the annular mass 2 in accordance with this rotation by a position sensor 10, as shown in Fig. 2.
- Silane coupling agent Lubricating fluid Pressure inserting load Accuracy of oscillation in axial direction Comparative embodiment 1 Not applied Applied Comparative embodiment 2 Applied Not applied Embodiment 1 Applied to metal side Applied to metal side Embodiment 2 Applied to metal side Applied to rubber side Embodiment 3 Applied to rubber side Applied to metal side Embodiment 4 Applied to rubber side Applied to rubber side
- the pressure inserting load and the accuracy of oscillation in the axial direction are improved not only in comparison with the comparative embodiment 2 in which the annular rubber is pressure fitted without applying the lubricating fluid, after applying the silane coupling agent to the fitting surface, but also in comparison with the comparative embodiment 1 in which the lubricating fluid is applied at a time of pressure inserting the annular rubber without applying the silane coupling agent to the fitting surface.
- the load at a time of pressure inserting the annular rubber is lowered in comparison with a case of pressure inserting the annular rubber without applying the lubricating fluid after applying the silane coupling agent to the fitting surfaces, and the load is lowered in comparison with a case of pressure inserting the annular rubber by applying the lubricating fluid without applying the silane coupling agent to the fitting surfaces.
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Abstract
Description
- The present invention relates to a manufacturing technique of a torsional damper absorbing a torsional vibration generated in a rotating shaft, for example, a crank shaft of an engine or the like.
- A torsional damper for absorbing a torsional vibration (a vibration in a rotational direction) generated in a crank shaft of an internal combustion engine of a vehicle in accordance with a rotation is provided with a structure in which a metal annular mass is coaxially and elastically connected to an outer periphery of a metal hub fixed to a crank shaft via an annular rubber, and lowers the torsional vibration in a specific rotating speed range on the basis of a dynamic vibration absorbing effect caused by a resonance in a torsional direction. The torsional damper includes a so-called fitting type torsional damper, and this type of torsional damper is manufactured by pressure inserting and fitting a rubber formed in an annular shape into a portion between opposing peripheral surfaces of the hub and the annular mass from one side in an axial direction.
- Since the fitting type torsional damper is structured such that the hub, the annular rubber and the annular mass are connected to each other only on the basis of a frictional resistance caused by a compression reaction force of the rubber at a time of being pressure inserted, there is a risk that a slip in a circumferential direction is generated between the fitting surfaces of the hub or the annular mass and the annular rubber at a time when an input torque is increased. Accordingly, in order to prevent the slip mentioned above from being generated, it is necessary to improve a sliding torque between the hub, the annular rubber and the annular mass.
- As a typical conventional art for improving the sliding torque between the hub, the annular rubber and the annular mass in the fitting type torsional damper, Japanese Patent Unexamined Patent Publication No. 2001-27287 describes a structure in which a silane coupling agent is applied to the opposing peripheral surfaces between the hub and the annular mass or the annular rubber at a time of pressure inserting the annular rubber to the portion between the opposing peripheral surfaces of the hub and the annular mass arranged in the outer peripheral side of the hub. In other words, the silane coupling agent interposed in the fitting surface between the hub and the annular mass or the annular rubber achieves a significant effect for increasing the sliding torque.
- However, in accordance with the conventional art mentioned above, since the silane coupling agent dries quickly, the silane coupling agent applied to the opposing surfaces of the hub and the annular mass, or the annular rubber pressure fitted to the portion between the opposing surfaces dries in a short time. Accordingly, there is pointed out a problem that a pressure inserting load is increased on the basis of an increase of a frictional resistance with the hub and the annular mass, due to generation of an adhesive property of the silane coupling agent at a time of pressure inserting the annular rubber. Further, a swelling deformation on the basis of an internal stress is generated in the annular rubber during a pressure inserting process, by the increase of the pressure inserting load, whereby a durability of the annular rubber is lowered, and a accuracy of oscillation in an axial direction of the annular mass is deteriorated, so that there is a risk that an oscillating motion of the annular mass during the rotation is increased.
- The present invention is made by taking the problem mentioned above into consideration, and a technical object of the present invention is to increase a sliding torque between a hub, an annular rubber and an annular mass without increasing a pressure inserting load at a time of pressure inserting the annular rubber to a portion between opposing peripheral surfaces of the hub and the annular mass.
- As a means for effectively solving the conventional technical problem, in accordance with a first aspect of the presentinvention, there is provided a manufacturing method of a torsional damper comprising the steps of:
- applying a coupling agent to opposing peripheral surfaces of a hub made of metal and an annular mass arranged in an outer peripheral side of the hub and made of metal, or an annular rubber pressure inserted to a portion between the opposing peripheral surfaces;
- thereafter applying a lubricating fluid thereto; and
- pressure inserting and fitting the annular rubber to the portion between the opposing peripheral surfaces.
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- In accordance with the structure mentioned above, a load at a time of pressure inserting the annular rubber is lowered in comparison with a case of pressure inserting the annular rubber without applying the lubricating fluid after applying the silane coupling agent to the fitting surface, and the load can be further lowered in comparison with a case of pressure inserting the annular rubber by applying the lubricating fluid without applying the silane coupling agent to the fitting surface.
- In this case, the coupling agent has a function of increasing a frictional force between the rubber and the metal, that is, making the hub, and the annular mass and the annular rubber in a firmly fitted state to each other so as to effectively prevent a slip in a circumferential direction from being generated between the fitting surfaces of the hub or the annular mass and the annular rubber. The coupling agents which can be employed are, for example, an amine group silane coupling agent (a silane coupling agent containing an amino group) described in the
patent document 1 previously referred, an urethane group silane coupling agent (a silane coupling agent containing an isocyanate group), the other silane coupling agents, an amino denatured sililated polymer corresponding to derivatives obtained by denaturing them, a sililated amino polymer, an unsaturated amino silane complex, a block isocyanate silane, a phenyl amino long-chain alkyl silane, an amino sililated silicone, a sililated polyester and the like. - The lubricating fluid is used for achieving a lubrication at a time of pressure inserting the annular rubber to the portion between the opposing peripheral surfaces of the hub and the annular mass, and those which can be employed are an aromatic hydrocarbon compound, a plasticizing agent, a softening agent and the like. The aromatic hydrocarbon compound is used, for example, as a solvent for a dry cleaning, various diluting agents, and an industrial aerosol, and the plasticizing agent and the softening agent are used as an additive agent to a rubber material for improving a workability of the rubber. As the plasticizing agent, phthalic acid derivatives or the like can be used, and as the softening agent, for example, a paraffin group softening agent can be used. Further, only one kind of these lubricating fluids may be selected, however, a mixture of two or more kinds may be used.
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- Fig. 1 is a half sectional view showing a manufacturing method of a torsional damper in accordance with the present invention by cutting along a plane passing through an axis; and
- Fig. 2 is a schematic view showing a half section obtained by cutting the manufactured torsional damper along the plane passing through the axis thereof and a method of measuring an accuracy of oscillation in an axial direction of an annular mass thereof.
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- Fig. 1 is a half sectional view showing a manufacturing method of a torsional damper in accordance with the present invention by cutting along a plane passing through an axis of a hub, and Fig. 2 is a schematic view showing a half section obtained by cutting the manufactured torsional damper along the plane passing through the axis thereof and a method of measuring an accuracy of oscillation in an axial direction of an annular mass thereof. In particular, in Fig. 1,
reference numeral 1 denotes a hub mounted to an axial end of a crank shaft of an internal combustion engine (not shown),reference numeral 2 denotes an annular mass concentrically arranged in an outer peripheral side of thehub 1 apart from the hub, andreference numeral 3 denotes an annular rubber pressure inserted and fitted to a portion between opposing peripheral surfaces of thehub 1 and theannular mass 2 from one side in an axial direction. - The
hub 1 is casted with a metal material, and has an inner peripheralside boss portion 11 mounted to the axial end of the crank shaft, adisc portion 12 expanded to an outer peripheral side therefrom, and arim portion 13 formed in an outer peripheral portion thereof. Theannular mass 2 is also casted with a metal material, and is arranged in an outer peripheral side of therim portion 13. Apulley portion 21 for transmitting a rotating force of the crank shaft to various auxiliary machines via a V belt (not shown) is formed in an outer peripheral surface of theannular mass 2, and atiming mark groove 21a corresponding to a detected portion of a crank angle for controlling an ignition timing or the like is formed in one position in a circumferential direction of one end in an axial direction of thepulley portion 21. Theannular rubber 3 is vulcanized and formed in an annular shape with a rubber-like elastic material. - An outer
peripheral surface 1a of the hub 1 (the rim portion 13) and an innerperipheral surface 2a of theannular mass 2 opposing thereto in a diametrical direction are formed in a gently undulated shape in a diametrical direction in correspondence to each other in the illustrated section. Further, a coupling agent is applied to the opposingperipheral surfaces peripheral surfaces peripheral surface 1a of thehub 1 and the innerperipheral surface 2a of theannular mass 2, and a method of dipping thehub 1 and theannular mass 2 in a liquid tank filled with the coupling agent. As the coupling agent, it is possible to preferably use a coupling agent obtained by diluting the silane coupling agent described previously by, for example, an ethanol wa'ter solution or the other alcohol water solution. - Further, the coupling agent may be applied to an inner
peripheral surface 3a and an outerperipheral surface 3b of theannular rubber 3 forming fitting surfaces with the outerperipheral surface 1a of thehub 1 and the innerperipheral surface 2a of theannular mass 2. As a method of application in this case, it is possible to employ a method in accordance with a spray application and a method of dipping in the liquid tank filled with the coupling agent. - Next, the
annular rubber 3 is pressure inserted to a portion between the outerperipheral surface 1a of thehub 1 and the innerperipheral surface 2a of theannular mass 2 from one side in an axial direction after a lubricating fluid is applied either to the outerperipheral surface 1a of thehub 1 and the innerperipheral surface 2a of theannular mass 2, or to the innerperipheral surface 3a and the outerperipheral surface 3b of theannular rubber 3 whichever the coupling agent is not applied, for example. At this time, since the coupling agent is dried, a pressure inserting resistance by adhesion is not generated, and a pressure inserting load caused by a frictional resistance between the innerperipheral surface 3a and the outerperipheral surface 3b of theannular rubber 3, and the outerperipheral surface 1a of thehub 1 and the innerperipheral surface 2a of theannular mass 2 is significantly lowered in comparison with a case that the lubricating fluid is not applied. Accordingly, it is possible to easily execute pressure inserting work. Further, surprisingly enough, the pressure inserting load becomes further smaller in comparison with a case that the lubricating fluid is applied without applying the silane coupling agent, as is understood from results of measurement mentioned below. - In this case, as the lubricating fluid, it is possible to employ the aromatic hydrocarbon compound, the plasticizing agent, the softening agent and the like which are described previously. Since these materials tend to be absorbed in the rubber material, and have proper volatility, they tend to be removed from the fitting surface on the basis of the absorption and the volatility, can be easily removed by cleaning, have good compatibility with the silane coupling agent, and do not cause any damage to the rubber material . Accordingly, these materials are preferable. Further, since the silane coupling agent dries quickly, it is possible to apply the lubricating fluid to the surface where silane coupling agent has been applied, after drying.
- In this case, after pressure inserting and fitting the
annular rubber 3, the lubricating fluid left in the fitting surface is removed by a cleaning agent or the like as occasion demands. - The torsional damper manufactured in accordance with this manner is structured, as shown in Fig. 2, such that the
hub 1 and theannular mass 2 are elastically connected to each other via theannular rubber 3, and the silane coupling agent (not shown) is interposed in the fitting surfaces between theannular rubber 3, and thehub 1 and theannular mass 2. Since the outerperipheral surface 1a of thehub 1 and the innerperipheral surface 2a of theannular mass 2 are formed in a gently undulated shape in a diametrical direction in correspondence to each other, theannular rubber 3 is also formed in a warped shape being profiled by those surfaces. Accordingly, it is possible to effectively prevent theannular mass 2 from falling away in an axial direction. - In the pressure inserting step mentioned above, as a result that the pressure inserting load is lowered by applying the lubricating fluid, and the swelling deformation of the
annular rubber 3 and the generation of the internal residual stress can be inhibited, the torsional damper is widely improved in durability of theannular rubber 3 and an accuracy of oscillation in an axial direction of theannular mass 2 at a time of rotating. Further, since the lubricating fluid applied at a time of pressure inserting is removed, whereby a sliding torque in the fitting surface between thehub 1 and theannular rubber 3 and the fitting surface between theannular mass 2 and theannular rubber 3 is significantly increased by the silane coupling agent without forming the outerperipheral surface 1a of thehub 1 and the innerperipheral surface 2a of theannular mass 2 which correspond to the fitting surface of theannular rubber 3, to be rough faces in accordance with a chemical surface treatment such as a bonderizing treatment or the like, it is possible to effectively prevent the slip in the circumferential direction from being generated between the fitting surfaces of thehub 1 or theannular mass 2 and theannular rubber 3 at a time of inputting a great torque generated by a dynamic vibration absorbing operation or the like. - The following Table 1 shows results obtained by measuring a pressure inserting load at a time of pressure inserting the
annular rubber 3, and an accuracy of oscillation in the axial direction of theannular mass 2 of the torsional damper after being manufactured, in order to verifying an effect obtained by the manufacturing method in accordance with the present invention. In this case, the torsion damper provided for the measurement is formed in a cross sectional shape shown in Fig. 1, and the accuracy of oscillation in the axial direction is obtained by rotating the torsional damper around an axis O and measuring an amount of displacement in the axial direction of one end surface of theannular mass 2 in accordance with this rotation by aposition sensor 10, as shown in Fig. 2.Silane coupling agent Lubricating fluid Pressure inserting load Accuracy of oscillation in axial direction Comparative embodiment 1Not applied Applied Comparative embodiment 2Applied Not applied Embodiment 1Applied to metal side Applied to metal side Embodiment 2 Applied to metal side Applied to rubber side Embodiment 3 Applied to rubber side Applied to metal side Embodiment 4 Applied to rubber side Applied to rubber side - As is apparent from the results of measurement mentioned above, in the
embodiments 1 to 4 in which the lubricating fluid is applied at a time of pressure inserting the annular rubber after applying the silane coupling agent to the fitting surface, the pressure inserting load and the accuracy of oscillation in the axial direction are improved not only in comparison with thecomparative embodiment 2 in which the annular rubber is pressure fitted without applying the lubricating fluid, after applying the silane coupling agent to the fitting surface, but also in comparison with thecomparative embodiment 1 in which the lubricating fluid is applied at a time of pressure inserting the annular rubber without applying the silane coupling agent to the fitting surface. - In accordance with the manufacturing method of the torsional damper on the basis of the invention stated in the first aspect of the present invention, since the annular rubber is pressure inserted and fitted to the portion between the hub and the annular mass after the coupling agent is applied to the fitting surfaces between the hub and the annular mass made of the metal and the annular rubber and thereafter the lubricating fluid is applied, the load at a time of pressure inserting the annular rubber is lowered in comparison with a case of pressure inserting the annular rubber without applying the lubricating fluid after applying the silane coupling agent to the fitting surfaces, and the load is lowered in comparison with a case of pressure inserting the annular rubber by applying the lubricating fluid without applying the silane coupling agent to the fitting surfaces. Accordingly, not only the pressure inserting work of the annular rubber is easily executed, but also the swelling deformation of the annular rubber and the generation of the internal residual stress during the pressure inserting step can be inhibited, and it is possible to widely improve the durability of the annular rubber and the accuracy of oscillation in the axial direction of the annular mass.
Claims (1)
- A manufacturing method of a torsional damper comprising the steps of:applying a coupling agent to opposing peripheral surfaces (1a, 2a) of a hub (1) made of metal and an annular mass (2) arranged in an outer peripheral side of the hub (1) and made of metal, or an annular rubber (3) pressure inserted to a portion between the opposing peripheral surfaces (1a, 2a);thereafter applying a lubricating fluid thereto; andpressure inserting and fitting the annular rubber (3) to the portion between said opposing peripheral surfaces (1a, 2a).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003015480 | 2003-01-24 | ||
JP2003015480A JP2004225829A (en) | 2003-01-24 | 2003-01-24 | Method of manufacturing torsional damper |
PCT/JP2003/013264 WO2004065820A1 (en) | 2003-01-24 | 2003-10-16 | Method of manufacturing torsional damper |
Publications (2)
Publication Number | Publication Date |
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EP1586791A1 true EP1586791A1 (en) | 2005-10-19 |
EP1586791A4 EP1586791A4 (en) | 2006-01-25 |
Family
ID=32767441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03756659A Withdrawn EP1586791A4 (en) | 2003-01-24 | 2003-10-16 | Method of manufacturing torsional damper |
Country Status (7)
Country | Link |
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US (1) | US7150088B2 (en) |
EP (1) | EP1586791A4 (en) |
JP (1) | JP2004225829A (en) |
KR (1) | KR20050090952A (en) |
CN (1) | CN1646827A (en) |
AU (1) | AU2003303777A1 (en) |
WO (1) | WO2004065820A1 (en) |
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US8342058B2 (en) | 2007-06-28 | 2013-01-01 | Hillsdale Automotive, Llc | Recessed belt damper |
US9121471B2 (en) * | 2012-05-03 | 2015-09-01 | Dayco Ip Holdings, Llc | Torsional vibration damper with nonuniform elastomer profile |
CN102748427B (en) * | 2012-06-29 | 2014-12-24 | 长城汽车股份有限公司 | Vibration damper and speed changer |
EP3172455B1 (en) * | 2014-07-25 | 2020-09-02 | Dayco IP Holdings, LLC | Low frequency torsional vibration damper |
KR102295137B1 (en) | 2015-03-30 | 2021-08-27 | 데이코 아이피 홀딩스 엘엘시 | Torsional vibration damper spoke design |
US10591042B2 (en) * | 2017-07-28 | 2020-03-17 | GM Global Technology Operations LLC | Damper pulley |
JP7390871B2 (en) | 2019-11-20 | 2023-12-04 | Nok株式会社 | Torsional damper and its manufacturing method |
JP2021085437A (en) * | 2019-11-26 | 2021-06-03 | Nok株式会社 | Method of manufacturing torsional damper |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS606774A (en) * | 1983-06-27 | 1985-01-14 | Tokai Rubber Ind Ltd | Production of torsional damper |
JPS60132736A (en) * | 1983-12-22 | 1985-07-15 | Toyoda Gosei Co Ltd | Preparation of vibration proof rubber with metal housing |
JPS60139431A (en) * | 1983-12-27 | 1985-07-24 | Toyoda Gosei Co Ltd | Manufacture of vibrationproof rubber with metal housing |
JPS60141533A (en) * | 1983-12-28 | 1985-07-26 | Toyoda Gosei Co Ltd | Manufacture of rubber spring with metal housing |
JPS60141534A (en) * | 1983-12-28 | 1985-07-26 | Toyoda Gosei Co Ltd | Manufacture of rubber spring with metal housing |
JPH01144485A (en) * | 1988-10-04 | 1989-06-06 | Tokai Rubber Ind Ltd | Torsional damper |
JP2001027287A (en) * | 1999-05-10 | 2001-01-30 | Nok Vibracoustic Kk | Torsional damper and manufacture thereof |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004125108A (en) | 2002-10-04 | 2004-04-22 | Nok Corp | Method for manufacturing torsional damper |
-
2003
- 2003-01-24 JP JP2003015480A patent/JP2004225829A/en active Pending
- 2003-10-16 EP EP03756659A patent/EP1586791A4/en not_active Withdrawn
- 2003-10-16 CN CNA038083493A patent/CN1646827A/en active Pending
- 2003-10-16 KR KR1020047016503A patent/KR20050090952A/en not_active Application Discontinuation
- 2003-10-16 AU AU2003303777A patent/AU2003303777A1/en not_active Abandoned
- 2003-10-16 WO PCT/JP2003/013264 patent/WO2004065820A1/en active Application Filing
- 2003-10-16 US US10/508,624 patent/US7150088B2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS606774A (en) * | 1983-06-27 | 1985-01-14 | Tokai Rubber Ind Ltd | Production of torsional damper |
JPS60132736A (en) * | 1983-12-22 | 1985-07-15 | Toyoda Gosei Co Ltd | Preparation of vibration proof rubber with metal housing |
JPS60139431A (en) * | 1983-12-27 | 1985-07-24 | Toyoda Gosei Co Ltd | Manufacture of vibrationproof rubber with metal housing |
JPS60141533A (en) * | 1983-12-28 | 1985-07-26 | Toyoda Gosei Co Ltd | Manufacture of rubber spring with metal housing |
JPS60141534A (en) * | 1983-12-28 | 1985-07-26 | Toyoda Gosei Co Ltd | Manufacture of rubber spring with metal housing |
JPH01144485A (en) * | 1988-10-04 | 1989-06-06 | Tokai Rubber Ind Ltd | Torsional damper |
JP2001027287A (en) * | 1999-05-10 | 2001-01-30 | Nok Vibracoustic Kk | Torsional damper and manufacture thereof |
Non-Patent Citations (9)
Title |
---|
DATABASE WPI Week 198928 Thomson Scientific, London, GB; AN XP002349547 * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 119 (C-282), 23 May 1985 (1985-05-23) & JP 60 006774 A (TOUKAI GOMU KOGYO KK), 14 January 1985 (1985-01-14) * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 294 (M-431), 20 November 1985 (1985-11-20) & JP 60 132736 A (TOYODA GOSEI KK; others: 01), 15 July 1985 (1985-07-15) * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 300 (M-433), 27 November 1985 (1985-11-27) & JP 60 139431 A (TOYODA GOSEI KK; others: 01), 24 July 1985 (1985-07-24) * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 303 (M-434), 30 November 1985 (1985-11-30) & JP 60 141533 A (TOYODA GOSEI KK; others: 01), 26 July 1985 (1985-07-26) * |
PATENT ABSTRACTS OF JAPAN vol. 009, no. 303 (M-434), 30 November 1985 (1985-11-30) & JP 60 141534 A (TOYODA GOSEI KK; others: 01), 26 July 1985 (1985-07-26) * |
PATENT ABSTRACTS OF JAPAN vol. 013, no. 402 (C-633), 6 September 1989 (1989-09-06) & JP 01 144485 A (TOKAI RUBBER IND LTD), 6 June 1989 (1989-06-06) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 16, 8 May 2001 (2001-05-08) & JP 2001 027287 A (NOK VIBRACOUSTIC KK), 30 January 2001 (2001-01-30) * |
See also references of WO2004065820A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7150088B2 (en) | 2006-12-19 |
US20050160572A1 (en) | 2005-07-28 |
CN1646827A (en) | 2005-07-27 |
WO2004065820A1 (en) | 2004-08-05 |
KR20050090952A (en) | 2005-09-14 |
EP1586791A4 (en) | 2006-01-25 |
JP2004225829A (en) | 2004-08-12 |
AU2003303777A1 (en) | 2004-08-13 |
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